Deep cycle battery????????

Submitted: Friday, Feb 16, 2007 at 22:52
ThreadID: 42399 Views:2186 Replies:4 FollowUps:3
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Can anyone help please??????????
I have a delkor deep cycle battery and its been sitting around for about 6 months
Its showing 2volts, can it be charged back up?And how?
I have a automatic charger and it will not charge unless the battery has a least 10volts
Please any help would be great
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Reply By: Sarg - Friday, Feb 16, 2007 at 22:56

Friday, Feb 16, 2007 at 22:56
Got a set of jumper leads? Use your vehicle to recharge it.
AnswerID: 222213

Follow Up By: V8 Troopie - Friday, Feb 16, 2007 at 23:02

Friday, Feb 16, 2007 at 23:02
This might not work. The battery is most likely badly sulfated by now and I doubt it would accept a charge from jumper leads in a reasonable time - you would not want to try that all day ;-).
If it was my battery I'd try with a low amperage non auto charger or just connect it to a 10W solar panel for a week or two and see if it will take up a charge.
FollowupID: 483021

Follow Up By: Sarg - Friday, Feb 16, 2007 at 23:13

Friday, Feb 16, 2007 at 23:13
Looks like you're up for a couple hundred bucks for a new one then
FollowupID: 483025

Reply By: Member - Olcoolone (SA) - Saturday, Feb 17, 2007 at 16:30

Saturday, Feb 17, 2007 at 16:30
hello jonboy,

Your battery may not be stuffed, the problem with a lot of deep cycle batterys is when they get very low they will not accept a charge.

Most batterys in new vehicles including calcium and AGM can not be charged by your run of the mill $20 to $200 battery charges sucsesfully, we have just purchased 2 new battery charges that can charge these batterys and it has a reconditioning mode for sulphated plates.

The one we are using in our 4wd is a Redarc 5 amp switch mode type (check out there web site for more info), we use a 25amp version (differant brand) for the workshop.

regards Richard

AnswerID: 222309

Reply By: Mainey (WA) - Sunday, Feb 18, 2007 at 13:01

Sunday, Feb 18, 2007 at 13:01
How did it get down to only 2 volts in just 6 months ??
AnswerID: 222447

Reply By: longJohn - Tuesday, Feb 20, 2007 at 11:10

Tuesday, Feb 20, 2007 at 11:10
You may still have a good battery on your hands, as long as it was not discharged under load, and if its quite new.
On the other hand, if its old and it was flattened by a light connected to it or something, disharged under load, it will be sulphated and useless.
With deep cycle batteries, they usually dont accept charge for a while, then later they start to accept charge. Just hook it up to a trickle charger (or a normal one will do) for a week and then test it by doing a load test. Hook something up to it that draws about ten amps or so, like a spotlight or a air fan (like a electric radiator fan, good job for a hot day in the shed!) and note what time and what voltage it starts at. THen at 10 min intervals mark down what the volts are. When it gets to 10.8 volts stop. This will give you an idea what kind of capacity it has. If it only took 20 mins or so to get to 10.8 volts then its useless and you need to chuck it away. A normal deep cycle battery which is about 75amp/H will take 4 to 6 hours to get down to 10.8 volts at this rate.

AnswerID: 222880

Follow Up By: longJohn - Tuesday, Feb 20, 2007 at 11:12

Tuesday, Feb 20, 2007 at 11:12
Or if you have a expensive de sulphation style charger give that a go.
FollowupID: 483711

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